Acids and Alkalis

Acids have a pH greater than 7.

• False
• True

Does Alkalis turn red litmus paper blue.

• No
• Yes
• Sometimes
• Rarely

When an acid reacts with a metal, ______ gas is produced.

• oxygen
• nitrogen
• carbon dioxide
• hydrogen

The pH scale ranges from 0 to ______.

• 7
• 14
• 10
• 20

Describe what happens when hydrochloric acid reacts with zinc.

• Carbon dioxide and zinc sulfate are produced.
• Oxygen gas and zinc chloride are produced.
• Hydrogen gas and zinc chloride are produced.
• Water and zinc oxide are produced.

List two properties of acids and two properties of alkalis.

• Acids: sour taste, turn blue litmus paper red.

• Alkalis: bitter taste, turn red litmus paper blue.

• Acid: Bitter taste, turn blue litmus paper red

• Alkalis: Sour taste, turn red litmus paper blue

Which of the following is an example of an alkali?

• Vinegar

• Lemon juice

• Baking soda

What color does blue litmus paper turn in an acid?

• Red

• Blue

• Green